This is an activity about lunar and terrestrial stratigraphy. Learners will study the patterns of lava flow by creating eruptions using soda-vinegar solutions and modeling with home-made playdough (stove-top and no-cook recipes are included). This...(View More) activity is in Unit 2 of the Exploring the Moon teacher's guide and is designed for use especially, but not exclusively, with the Lunar Sample Disk program.(View Less)